# Copyright 2014 Square Inc.
#
#    Licensed under the Apache License, Version 2.0 (the "License");
#    you may not use this file except in compliance with the License.
#    You may obtain a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS,
#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#    See the License for the specific language governing permissions and
#    limitations under the License.

# Denormalized association between a {User} and the {Event Events} from the
# {Bug Bugs} that that User is {Watch watching}.
#
# Associations
# ============
#
# |         |                                               |
# |:--------|:----------------------------------------------|
# | `user`  | The {User} watching the Bug.                  |
# | `event` | The {Event} for the Bug the User is watching. |

class UserEvent < ActiveRecord::Base
  self.primary_keys = [:user_id, :event_id]

  belongs_to :user, inverse_of: :user_events
  belongs_to :event, inverse_of: :user_events

  validates :user,
            presence: true
  validates :event,
            presence: true
end
